Mechanical movement



' (ModeL) I I 0. G. ALDERM-AN.

MECHANICAL MOVEMENT.

Patented Feb. 28.1882.

may

scribed and claimed. I

- merits; and I do hereby declare that the followbar I) to move back and forth in the transverse length that it extends across' the wheel 0 a UNITED STATES PATENT OFFICE.

I OLINTHUS e. ALDERMAN, OF TRAER, IOWA.

MECHANICAL MOVEMENT.

SPECIFICATION formingpart of Letters Patent No. 254,186, dated February 28, 1882.

' Application fiied nni 28,1881. (Model.)

To all whom it may concern Be it known that I, OLINTHUS G. ALBER- MAN, of Traer, in the county of Tama. and State of Iowa, have invented certain new and useful Improvements in Mechanical. Moveing is a full, clear, and exact description of the invention,which willenableothers skilledin the art to which it appertains to make and use the same, reference being had to the aecom panying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to mechanical movements, the object being to provide improved devices for converting motion; and the invention consists in the construction and arrangement of parts, as hereinafter more fully de- In the annexed drawings, Figure 1 is a front elevation of my improved devices for converting motion. Fig. 2 is a side view of the same, partly in section. Fig. 3 is a perspective view of the crank-wheel with sliding bar and pitman, and Fig. 4 is a modification.

Like letters indicate like parts.

A represents one of the bear-in gs of a power-shaft, B, which carries a crank-wheel, O. The face of this wheel is transversely grooved at the center, the said groove having beveled sides for the reception of a correspondinglyshaped sliding bar, D, which is thus keyed to the wheel so as to reciprocate within the groove at each revolution of the wheel.

At one end of the sliding bar D-is a wrist pin, to which the pitmaii E is attached. This wrist-pin also carries a roller, F, which engages in an elliptical groove or slot, G, formed in a face-plate, H, which is provided with a shank or arm, H, that is attached to the standard or hearing A by means of suitable screws or bolts. I p

When power is applied to the crank-wheel B, causing it to revolve, it will be seen that the engagement of the roller F in the elliptical slot or groove G causes the sliding crankgroove across the wheel, thus practically equalizing the length of the pitman E and enabling it to push orpull more ,evenly'and with less strain. By making the sliding bar D of such steady motion is imparted to the pitman E, the

ends of which at each reciprocation describe ellipses. V

Instead of forming the elliptical groove or slot G in the face-plate H, said plate may be dispensed with andan elliptical groove made in the hearing A, through the center of which passes the shaft 13. In this instance the shaft B may carry a wheelhavingatransverse groove as above described, with a notch or recess cut through the wheel at'one end of the groove; or a crank-bar, 0, may be substituted for the wheel, as shown in Fig. 4. This bar is grooved longitudinally for the reception of a sliding bar, D, having a wrist-pin, d, at one end for attachment of the pitman, and at the same 1 In a mechanical movement, the combina- '7 tior, with a trans\-'ersely-grooved wheel attachedtothe end of a drivingshaft journalediu suitable bearings, of a face-plate or bearinghaving an elliptical groove or slot, a sliding bar reciprocating within the grooved face of the wheel at each reciprocation of the same, and provided with a roller adapted to engage with the elliptical groove or slot, and-a pitman attached to the sliding bar, whereby the movements of the pitmen are equalized and an elliptical motion imparted to its ends at each reciprocation, substantially as specified.

2. In a mechanical movement, the combination, with the transversely-grooved wheel 0, attached to a driving-shaft, B, journaled in I the hearing A, and a face-plate, H, having an elliptical-slot or groove, G, and shank H, by which it is attached to the hearing A of the sliding crank-bar D, carrying a pitman, E, and a roller, F, adapted to engage with the elliptical groove in the face-plate, substantially as and for the purpose shown and described.

In testimony that 1 claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

OLINTHUS Gr. ALDER-MANF Witnesses:

THOMAS GAINES, E. O. BARR. 

